Magnetic stop for spinning machines



Nov. 17, 1 925.

1,561,977 FIDLER EF AL MAGNETIC STOP FOR SPINNING HACHINES 4 Sheets-Shee t 1 Filed June 1a, 1925 m M 0 am as" I amnion,

Nov. 17 1.925.

1. FIDLER ET m. v

I MAGNETIC STOP FOR SPINNING HACHINES Filed June 1s, 1923 4 Sheets-Sheet2 Grammy l. FIDLER ET AL IAGNETIC STOP FOR SPINNING MACHINES 4Sheets-Sheet 3 Filed June 18, 1923 Nov. 17, 1925. 1,51,-977

I. FIDLER ET AL IAGNBTIC STOP FOR SPINNING IACHINES Filed Juno 1a, 1923r 4 Sheets-Sheet- 4 Patented Nov. 17,1925.

UNITED STATES- 1,561,977 PATENT OFFICE.

ISAAC FIDLER AND BOY GLERMONT PRESTON, OF HIGH POINT, NORTH CAROLINA,

ASSIGNORS To STEHLI SILKS CORPORATION, OF NEW YORK, N. Y.

MAGNETIC STOP FOR SPINNING MACHINES.

Application filed June 18, 1923. Serial No. 646,085.

To all whom it may concern:

Be it known that ISAAC FIDLER and ROY CLERMONT PRESTON, citizensof theUnited States, residing at High Point, county of Guilford, State ofNorth Carolina, have invented certain new and useful Improvements inMagnetic Stops for Spinning Machines, of which the following is aspecification.

This invention relates to textile machinery, and has special referenceto a spinning machine.

More particularly, the invention relates to a magnetic stop forspinners, the same being a device. for shifting the belt to idleposition, applying a brake, and operating the take-up latch of thespinner whenever certain abnormal conditions occur in the operatingmechanism.

In the operation of spinners of this de scription, the machines areeither driven singly from a motor or, as is more usual, are arranged forgroup drive, one motor being used to drive several machines. Deviceshave been perfected wherein the breaking-of a thread or threads willeffect the stopping of certain parts of the spinning machine, but attimes, without any threads being broken, the current for the motorceases and the machine runs slowly to a stop which results in theimperfect spinning of all the threads on the machine or machines whichare driven by that motor. At other times, through some decrease in thecurrent, the motor slows up until the machine or machines drop below theproper spinning speed, and this also results in a defective product;

Thepresent invention contemplates a novel and improved stop motion forspinners of this class wherein any stopping of the motor driving themachine or machines, or any decrease in the speed of that motor below apredetermined point, will result in shifting the belt and applying thebrake to the driving means so that the spinner is quickly brought to astop.

The mechanism employed for this purpose is connected to the means foroperating. the spindles, and in machines of this class certain provisionis made in'alinost all,up-todate spinners for a fly wheel for steadying.

the operation of the second time spindles,

this fly wheel governing these spindles independently of the first timespindles. U11.-

. driving mechanisms.-

der such circumstances, it will be obvious that if the second timespindles are disconnected, from the first time spindles, suddenly whilethe machine is running, the fly wheel will continue the operation of thesecond time spindles for some time after such disconnection.

The present invention also contemplates an improved mechanism whereinthe second time spindles will be disconnected from the first timespindles, and the driving means under such conditions as will effect thestopping of the machine from the causes above mentioned, thisdisconnection being in the way of means for making the drop wire stopoff motion inoperative, and thereby preventing the threads from becomingslack or tangling. I

The invention consists in general of an improved mechanism of the classdescribed having certain novel details of construction and combinationsand arrangements of parts hereinafter more particularly deacters ofreference indicate like parts in the several views, and:

Fig. 1 is an end' view of a machine equipped with a stop motion ormagnetic trip constructed in accordance with this invention, the partsbeing shown running position.

Fig. 2 is a view similar to Fig. 1 with the parts shown in trippedposition.

Fig. 3 is'a side elevation of the mechanism illustrated in the otherfigures, the parts being shown in the position of Fig. 1.

Fig. 4: is a detail section on the line l-4 of Fig. 2.

Fig. 5 is a diagrammatic view of certain electrical connections usedwhen operating a battery of spinners by a single motor.

.in released position, and in dotted lines in normal position.

Figure? is a detail view showing themanner of supporting a swingingshaft forming part of this invention- Figure 8 is a detail diagramshowing the connection of this swinging shaft with the Cir In thedrawings which are here used to illustrate the application of theinvention to a spinner, it has not been deemed necessary to show thespindle and other like parts of the spinner, but it is thoughtsufiicient to illustrate those parts upon which the invent-ion directlyoperates, it being under stood that the remaining parts of the spinnerwhich are not illustrated, are those common to machinery of thisdescription. However, there is shown in these drawings one end frame 10of the spinner, and outside of this frame and extending across the endis the main driving shaft 11, whereon is keyed or otherwise secured afast pulley 12. A loose pulley 13 is likewise mounted on this shaft sothat a motor may be connected to the machine by driving belt 1t, thebelt when on the fast pulley 12 driving the mechanism, and when on theloose pulley 13 allowing the mechanism to run idly.

Furthermore, there are fixed on this shaft several other belt pulleyswhich are belted to certain parts of the spinning mechanism, and two ofthese belt pulleys 15 are located adjacent the ends of the shaft.Mounted in suitable bearings 16 is a rock shaft 17 whereon is a pair ofbrake arms 18 provided with brake heads 19 which are engageable, atcertain times with the pulleys 15 so as to brake the same and stop themachine. Extending outward from the end frame 10 is a bracket 20 havingan upwardly extending portion 21 whereto is fixed a guide bracket 22extending in parallelism to the shaft 11 above said shaft. Throughsuitable openings in the guide bracket 22 passes a shifter bar 23, whichis movable lon itudinally and lies parallel to the shaft 11. Thisshifter bar carries a belt shifter fork 24, the arms of which engage thebelt 14. By this means movement of the shifter bar in one direction willplace the belt on the pulley 12, while movement in the oppositedirection will place the belt on the pulley 13. A spring 25 has one endconnected to the shifter bar, and the other end to an eye 26 fixed onthe bracket, and this spring, being a tension spring, constantly urgesthe shifter bar to move the belt 14 on to the loose pulley. Extendingfrom the bracket 22 is a short bracket 27 having a forked end 28, and inthis forked end is journalled a shaft 29 on which is a crank arm 30having a. crank handle 31 engaging in a hook 32 fixed to the shifter bar23. The crank arm and hook are so arranged that with the crank 31 fullyfitting in the hook it is swung across the dead center so that thetension of the spring 25 only tends to urge the crank 31 into closerfitting in the hook but when the crank is moved outwardly so the hookpasses its dead center the spring will then. act to quickly pull the bar23 to the left. By this arrangement, movement of the shifter bar in onedirection will oscillate the shaft 29 in a corresponding direc tion.

On this shaft 29 is also provided an arm 33 revolubly on the shaft andhaving an opening 34c therein wherethrough passes a rod On the end ofthe rod 35 is a collar 36 which is engageable by the arm 33 at a certainperiod in the operation of the device. This rod 35 is connected to anarm 37 extending rigidly from a brake lever 33, which is fixed on theshaft 17, a similar brake lever 39 being likewise fixed on the sameshaft at the opposite end of the device. The brake lever 38 is providedwith a lateral lug 40 to which is connected one end of a tension spring41, the other end being connected to a tension regulating device 42fixed to the end frame 10. The arrangement of this spring 41 is suchthat, with the parts as shown in Fig. 3, there is but little tendencyfor the spring to move the lever The lever 39 is connected to the ironarmature held to core 13 of a solenoid A, the energization of which iscontrolled by the motor current, the solenoid being so arranged that solong as the motor is running at proper speed, current will pass throughthis solenoid in sufficient quantity to hold the levers 3S and 39 in theposition shown in Figures 1 and 3, and thus to hold the brakes out oftheir operative relation with the pulleys 15. lVhenever the current inthe solenoid decreases beyond certain limits, the spring 11 will causethe levers 33 and 39 to rock downward, and in consequence, the rod 35will be movedso that a collar 415 on that rod will engage the arm 33,and will thus move the crank 31 from its engagement with the hook sothat the shifter bar 23 is freed, and movement of the bar to theposition shown in Fig. 2 is permitted. This collar 15, in order to breakthe shock of the bolt on the arm 33 is slidable on the rod 35, and restsagainst a shock absorbing spring 46 which has its other end bearingagainst a fixed collar d7. Thus, when the spring 41 actuates the lever38, the arm is engaged yieldingly by the col.- lar L5.

The second time mechanism is shown in part at the upper end of thefigures, and the part shown includes a shaft 1-8, which revolves infixed bearings and carries a gear 49 which meshes with a gear 50 fixedon a shaft 51 which constitutes the driving shaft of this mechanism,which is driven by some suitable gearing as indicated in Fig ure 8 andwhich is so mounted as to swing from the position shown in Fig. 1 to theposition'shown in Fig. 2. This mounting includes a double arm lever 52,and a tension spring connected to one of the arms of the lever, andconstantly urging the gears lufi 49 and 50 out of mesh. In order toholdthe gears in mesh, a trip latch 54: is mounted on the end frame, andengages a pin 55 on one arm of the double armlever 52. These parts justdescribed are parts of the spinner itself, and do not form directpartsof this invention. However, provision is made for freeing the latch54 upon operation of the brake and belt shifter mechanism so that thegears may drop out of mesh, and the shaft 48 continued torun-independently of the shaft 51 and the driving mechanism.

Now the shaft 48 is the shaft which actuates the second time spinners,and consequently, under these conditions, the second time spinners willcontinue to run until friction works to stop the movement, and will thusprevent slacking and tanglinq of the threads. The disengaging mechanismfor the trip latch 54: does form part of the mechanism of thisinvention.

Extending through guides 56 on the end frame 10 is a trip rod 57, theupper end of which engages a notch 58 in the trip latch 54.. On this rodis a collar 59 which rests against a fork 6O projecting from the rockshaft 17. By this means whenever the rock shaft operates through theaction of the spring 41, the trip rod 57 is pushed up and frees thelatch 54 from the pin 55, thus permittin" the parts to assume theposition shown in Fig. 2.

From the foregoing, it will be seen that upon the solenoid current beingso reduced as to permit the iron armature 4:3 to move outward under theinfluence of the spring ii, the belt will be shifted, the brakesapplied, and the second time mechanism disconnected so that the machineis stopped, but the second time mechanism allowed to come slowly to astop through the friction of the parts.

It is to be observed that the arm 33 is free on its shaft, and thatopposite the arm 30 there is provided a bolt or stop 59, which isengaged by the arm 38. The purpose of this is to permit a slightmovement of the arm to move the latch arm 33 sufficiently far that theaction of the spring 25 may continue the movement, thus turning theparts from the position shown in dotted lines in Fig. 6, to the positionshown in full lines in said figure.

In order to prevent minor fluctuations in the current from effectingrelease of the parts by decreasing the magnetic current,

and also in order to permit, when a single motor is employed foroperating a series of machines, one machine to be shut down withouteffecting the other, a wiring arrangement such as is shown in Fig. 5 canbe used. In this wiring arrangement it will be seen that there isprovided a pair ofv wires 60 going to the leads of the motor brush, notshown, 0116 of these wires is connected to a relay 61 directly, whilethe other wire is connected to this relay through the magnets orsolenoid let m series. The first wire is likewise connected to the'relaymagnets throiwh a resistance 62. By this means, the minor fluctuationsabove referred to, or the stoppage of one machine in no way affects thesolenoids or magnets 4:4 to such an extent as to produce operation ofthe stop mechanism.

To prevent operation of stop off mechanism dueto voltage fluctuations online supplying motor the relay above described is provided, the controlmagnets of which are connected directly across the current leads orpower lines. The relay contacts control the current flowing to magnetsor solenoids from power lines.

Action of the relay is retarded for several seconds after powerinterruption by reason of the counter electro-niotive-force' of themotor.

By reason of the time lag due to counter E. M. F. machines. are not shutdown by sudden drops or considerable variation in supply voltage.Furthermore, also by reason of the quick breaking action at relaycontacts, the magnets in a group act in unison and are practically freefrom effects of residual magnetism.

o claim: 7

1. A stop action for spinning machines and the like comprising a countershaft, a

fa t and loose pulley mounted upon said shaft, a driving belt positionedto operate in conjunction with said fast and loose pulleys, a brake drummounted upon said counter shaft, a brake shaft journaled to oscillate inparallelism with the counter shaft, a brake shoe carried by the brakeshaft positioned to engage the drum, a spring tending to move the brakeshoe into braking engagement with the drum, an electric motor fordriving the counter shaft, an elect-ro-magnet introduced into thecircuit of the electric motor tending to hold the brake shoe inoperative against the tension of the spring when the current is normal,and moving means for shifting the belt, the movement of which isinitiated by the braking move ment of the brake mechanism.

2. A stop action for spinning machines and the like comprising a countershaft, a fast and loose pulley mounted upon tht counter shaft, a drivingbelt operating in conjunction with the fast and loose pulleys, a brakedrum mounted upon the counter shaft, a brake shaft j ournaled inparallelism with the counter shaft, a brake'shoe carried by the brakeshaft proportioned to engage the brake drum, a spring tending to movethe brake into braking engagement with the drum, an electric motor foroperatingthe belt, an electro-magnet introduced into the circuit andenergized thereby and tending to hold the brake out of engagement withthe drum, and the spring at its position of minimum efficiency, movablemeans for shifting the belt, and means actuated from the brakingmechanism to initiate the movement of the belt shifting mechanism.

3. A stop action for spinning machines and the like comprising a countershaft, a fast and loose pulley mounted upon the counter shaft, a drivingbelt coacting with the fast and loose pulley, a brake drum mounted uponthe counter shaft, a brake shaft journaled in parallelism With thecounter shaft, a brake shoe carried by the brake shaft and proportionedto engage the periphery of the brake drum, a spring tend ing to move thebrake shoe into engagement with the brake drum, an electric drive forthe belt, an electro-magnetintroduced into and energized by the drivecircuit and tending to hold the brake shoe out of engage ment With thespring extending substantially across the axis of rotation of the brakeshaft, moving means for shifting the belt, and means actuated by themovement of the brake mechanism to initiate the movement of the beltshifting mechanism.

4. A stop action for spinning machines and the like comprising a countershaft, a fast and loose pulley carried by the counter shaft, a drivebelt coacting with the fast and loose pulley, a sliding belt shiftmechanism, a spring tending to slide the belt shift mechanism to movethe belt on to the loose pulley, means to lock the sliding beltmechanism against the tension of the spring, a

brake drum carried by the counter shaft, a pivoted brake shoeproportioned and P081- tioned to engage the brake drum, an elec tricdrive for actuating the driving belt, an electro magnet introduced intothe circuit of the electric drive and tending to hold the brakeinoperative While the current is normal, and means actuated by themovement of the brake under the tension of the spring for releasing thelock of the belt shifting mechanism.

5. A stop action for spinning machines and the like comprising a countershaft, a ast and loose pulley mounted upon the counter shaft, a drivingbelt coacting With the fast and loose pulley, a sliding belt shiftingmechanism for moving the belt, a spring tending to move the slidingmecha nism to shift the belt from the fast to the loose pulley, a brakefor applying braking tension to the counter shaft,ian electric drive forthe driving belt, an electro-magnetintroduced into the circuit of theelectric drive and tending to hold the brake normally inactive, meansoperated by the movement of the brake for initiating the action of thebelt shifting mechanism, a secondary drive shaft journaled upon amovable journal, and means actuated from the movement of the brakemechanism for moving the second ary drive shaft from driving toinoperative position.

In testimony whereof We affix our signatures.

ISAAC FIDLER. ROY O. PRESTON.

